Regenerating coke-furnace.



E. ORE.

REGENERATING COKE FURNACE.

APPLICATION FILED OCT. I2. I9I1- Patented Jan. 14,1919.

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E. ORE. REGENERATING COKE FURNACE. APPLICATION FILED OCT. 12. 191i.

Patented Jan. 14, 1919.

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REGENERATING COKE-FURNACE.

earner;

Specification of Letters Patent.

Patented Jan. 14, 1919.

Application filed October 12, 1917. Serial No. 196,313.

To all whom it may concern:

Be it known that LEnNns'r One, a citizen of the Republic of France, resident of Caen,

products the heating takes place in heating fines arranged in the vertical partitions,

which separate the carbonizing chambers, by

the combustion of gases developed in the furnaces themselves or outside, which combustion is effected in air admitted either at the temperature of the surrounding atmosphere or previously heated.

The furnaces are heated satisfactorily only by producing at will in a given zone of the partition the necessary heat, which can be eflectedonly if simple and easy means are available to burn at the said point, the quantity of gas necessary with a suitably regulated amount of air.

The present invention relates to coke furnaces for recovering by-products and for regenerating heat, provided with a horizontal carbonizing chamber, in the )artition wall of which there-1 1s disposed, t roughout its entire. length, a series of vertical heating fines which are arranged in such a manner that each one of them can be separately heated to the required temperature by combustion of a suitable quantity of gas mixed with the proper amount of air; this furnace is characterized by multiple heating fines in the form of a reversed 'U, each heated by a heater which is fed at the desired combustion point, with gas and air supplied in regulated amounts by means of output regulators which are simple and readily accessible. Figure 1 is an elevation of the front of the furnace, that is to say, of the front seen from the side .of the hearth on the lines A B of Figs. 4 and 5.

Fig. 2 is a transverse section of the furnace on the lines G D E F G H of Figs.

fl and 5.

Fig. 3 :is atransverse section of the furmice on the lines I J K. L M N of Figs.

' 4c and 5.

. Fig. 4 is a longitudinal section through the partition of the front half of the furnace entire line 0 P of Fig. 3.

, gle partition,whereas but one Fig. 5 is a longitudinal section of the partition of the furnace on the lines Q, R S T of Fig. 2. b

Fig. 6 is a longitudinal section through the chamber of tho.rear half of the furnace on the lines U V X Y of Fig. 2.

Figs. 7 and 8 represent in detail an elevation and a plan view of a burner arranged entirely beneath the partition.

Figs: 9 and 10 represent in detail an elevation and a plan view of a burner, likewise situated under the partition, but fed by'gas and air conduits which extend under the'hearth of the rear half of the adjoining carbonizing chamber.

The heating arrangement is applied to a furnace heated with admission of combustion air, either of the surrounding temperature or heated in regenerating chambers. In the latter case, owing to the alternative reversal of the draft, the construction of the furnace is more complicated, since a double installation of burners is required for a sinis required for the other types of turnaces. The following description therefore relates to the more complicated furnace which is provided with regenerating chambers with an intermittent reversal of draft.

In the present arrangement, the furnace has an ordinary carbonizingchamber 1 and an optional, number of chambers adjoining.

each other and separated by partitions 2,

constituting a. battery. In each partition, and in the walls in the abut'mentsfor :the end furnaces of the battery, vertical heating flues 3 are separately arranged in the form of a reversed U side by side and in sullicient numbers to occupy the'partition or the wall over its whole length, and rising so as to heat the charge in the furnace throughout.

The furnace is provided, as already pointed out, with two groups of burners, alter-' 1 nately ignited and extinguished in'turns; the

first group is mounted completely under the partition, with its "gas and air pipes. The second group likewise burns under the par- .tition,-leut its gas and air pipes pass and extend under the hearth pf the adjoining can bonizing chamber, either at the right or the left, but at the'same side, for allthe fur naces of the battery. In order to facilitate the description, the burners of the group 55 for instance, every half hour.

60 the hearth tion there are sixteen heating flues 3 in the form of a reversed U, each having a partition burner under one branch, and a hearth burner under the'other branch; consequently each furnace has sixteen partition burners l0 and sixteen hearth burners which are dis tributed (for facilitating the construction and the operation) with regard to then' anand gas pipes, half at the front and hall at the rear of the furnace. Finally, there are eight front partition burners and eight rear hearth burners, and in the same way eight front hearth burners and eight rear parti tion burners.

With the exception of a few details such as the length and shape of the air and gas pipes, all the burners are of the same type. Taking as example a front partition burner, this consists of a refractory block 4, through which small inlets for the air and gas pass.

The gas reaches the burner through a re fractory conduit 5 which extends under the a partition from the burner to the, front of the furnace, Where it is connected to a small gas tube 6 provided with an ordinary regu-.

lating valve. The eight tubes 6 of the eight front partition burners are branched on an end pipe 7 provided with a regulating valve mounted on a gas conduit 8 which extends in a gallery provided for all the front burn- 85 ers of the battery. For the supply of air refractory conduits 9 are provided in variable numbers for each burner. but limited to twoin the example. The said air conduits end in a heated air chamber 10 (they can be arranged at will as far as this point in the same refractory block as the gas conduit). The air chamber 10 communicates through openings 11, regulated by dampers 12, with an intermediate heating line 13 which is con-' nected, by a fine 14, with a collector 15 connected to a regenerating chamber 16 which is constituted in the ordinary way by a stacking of refractory bricks. (In order to facilitate the description, for each front and rear half of the furnace an independent set of regenerating chambers has been assumed).

As usual, the regenerating chamber 16 is alternately in communication with a blower and flue, the reversal of draft taking place,

The conduits 9 therefore serve for tluradmission of air to the burners during the ignition period of the latter, and for the discharge of the burnt during the other period, when burnersare ignited. The conduits 9 are provided, at their ends which enter the air chamber 10, with small refractory dampers 17 which slide in grooves. Opposite to the said dampers the air chainea her 10 has in its wall, openings which end by contact with the hot air of the furnace.

Lashes phigs l8. it is enough to remove a plug and to inove in the required direction through the opening the small damper 1'? by means of asuitable light'hook, so as to regulate at will the air admitted at 9. The dampers 12 which control the entrance to the chamber 10 can be operated in the same manner.

The above description will suliice to explain the operation otthe heating arrange-- ments. It, for, instance, the burners l are considered, during their ignition period, the gas supplied through the supplied through the conduits 9, at the bottom of the first branch of the flue The products of this combustion rise through the said branch, descend through the other, and come in contact with the hearth burners 19, the gas con duits of which are closed (for this the small gas tubes .20 of each hparth burner have their valves constantly open for the required out put; and for the extinction of the burners, closingis effected on the ei ht burners together with the valve of the end pipe 21, similarly to the end pipe 7 which has been described) The air conduits 22 of the hearth burners, on the contrary, are always open and, at the period under consideration, they serve for the discharge of the predicts burnt in the burners a. l Vithout d ..-3cibing th.

22 the burnt gases pass to an air chamber 23 and, finally, through a collector 24 to a re generating chamber 25, for the time being in conununication with ,the line or chimney. The regulation of the small dampers of the conduits 22 is effected byineans of a hook passed through the openings of *5 chamber facing the gallery and or plugs 26.

When the ignition period of the burners 1- is ended. the draft is reversed in the regenerating chamber. and the regenerating chamber has air blown into it, while the regenerating chamber 16 conveys the, burnt gases to the chimney. The gas is turned on to the burners 19 and cut oil from the burners 4-. It will be scenand this is very important for the regular operation of re' right, and from right to left, 'herehy there is absolutely no modification of the heating.

he above description regarding the front half of the furnace applies likewise to the rear half, since the two halves are ,symmetrical relatively to the transverse axis In the same way, the rear conduit 5 ignites Elli ' on which saidtubes are burners) the gas of all the rear burners of the lur-' nace. I

31 is the air piping tor the burners 27, and 32 indicates the small regulating dampers. llithont entering into all the details, Sit is. the intermediate flue which communicates with the air chamber 35 (of which 34: are the openings with removable plugs) and also with the collector 30 connected to the regenerating chamber 37 which is coupled with the regenerating chamber 38 for the rear hearth burners, with which it communicates through the collector 39, etc. (A similar arrangement for the rear hearth of the furnace, openings with 40 surmount all the heating fines 3, andenable, when required, the supervision of the combustion. These openings serve also for the subsequent ignition of the burners, more particularly when the combustion airhas been admitted at the surrounding temperature.

' Claims: i

1. In a coke furnace having inverted U-shaped heating tines in the partitions in closing the carbonizing chambers. a burner On. the top removable plugs located at the foot of each branch of each fine and having gas and air openings; a gas supply conduit individual to each burner. a tube leading to each gas conduit and provided with a regulating valve. an end pipe branched provided with a'regulating valve. and a main gas conduit whereon said end a plurality of air conduits individual to each burner and leading to the same for supplying heated air thereto, an anchamber from which the air conduits lead, means for pipe is mounted;

regulating the air supplied by each air con; duit, and a collector chamber with which said air chamber is in communication ;2 whereby each flue can be individually heated, independently of the others, to the desired temperature by combustion of gas admitted in the desired quantity and burned with the proper proportion of air.

2. In a coke furnace having inverted U-shaped heating flues in the partitions inclosing the carbonizing chambers, a burner located at the foot of each branch of each flue and having gas and air openings; a gas supply conduit individual to each burner, a tube leading to each gas conduit and provided with a regulating valve. an end pipe on which said tubes are branched provided with a regulating valve, and a main gas conduit \vhereon said end pipe is mounted; a plurality of air conduits individual to each burner and leading to the same for supplying heated air thereto, an air chamber from which the air conduits lead, means for regulating the air supplied by each air conduit,

and an intermediate heating flue in port communication with the air chamber, a collector chamber communicating with said intermediate flue, and a regenerating chamber communicating with said collector chamber; whereby each flue can be individually heated. independently of the others, to the desired temperature by combustion of gas admitted in the desired quantity and burned with the proper proportion of air.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

ERNEST ORE,

\Vitnesses EMILE Lnnan'r, CI'IAS P. PRESSLY. 

